Alloy



Patented Feb. 24, 1925.

UNITED STATES FRANKLIN R. BENNETT, OF SPRINGFIELD, OHIO, ASSIGNOR TO THE BAUER BROTHERS COMPANY, OF SPRINGFIELD, OHIO, A CORPORATION OF OHIO.

ALLOY.

No Drawing.

To all whom it may concern:

Be it known that I, FRANKLIN R. BEN- NETT, a citizen of the United States, residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in Alloys, of which the following is a specification.

This invention relates to improvements in alloys, it particularly relating to an iron alloy having the general properties to a large degree of unannealed malleable iron.

The object of my invention is to produce a metal of long wear resisting quality, one of the uses to which it has been found particularly applicable being the casting of grinding mill plates, crusher rolls, or like parts for the disintegrating and pulverizing of various materials.

Metal heretofore used for such castings has contained silicon, sulphur, manganese, carbon and phosphorus in addition to the iron, a typical analysis of which isas follows:

. Percent.

r Silicon .40 Sulphur .18 Manganese .40 Jarbon 3.38 Phosphorus .18 0 Iron (inchuling the usual impurities)- 95.46 \Vhile the proportions of the ingredients given above are usual yet some of those proportions in my improved alloy may be varied within the limits of substantially .20 to .60 percent for silicon; sulphur less than .25 percent; .20 to .70 percent for manganese; 3 to 4 percent for carbon.

I have discovered that by increasing the percentage of phosphorus so that it will be in the proportion of from .75 ereent to 3.50 percent, leaving the silicon, su phur, manga- Application filed March 28, 1923. Serial No. 628,345.

nese and carbon in substantially the proportions mentioned above, with the balance iron, a metal is secured which will be far superior in wearing qualities for the purposes mentioned to castings made from metal of the usual formulas. The following is a formula of my improved alloy:

Percent. Silicon .20 to .60 Sulphur .10 to .25 Manganese .20 to .7 0 Carbon 3 to 4 Phosphorus .75 to 3.50 Iron (including usual impurities) 95.75 to 94.55

sulphur less than .25 percent, manganese from .20 to .70 percent, and combined carbon from 3.00 to 4.00 percent.

2. A cast iron alloy of wear resisting quality containing phosphorus from .75 to 3.50

percent, silicon from .20 to .60 percent, sulphur less than .25 percent, manganese from .20 to .70 percent, and traces of such other elements are are found in pig iron.

In testimony whereof, I have hereunto set my hand this 27th day of November, 1922.

FRANKLIN R. BENNETT. 

